Home / 66,355.47-91,572.65-36,141.70

Finding the Fourth Proportional to 66,355.47, 91,572.65 and 36,141.70

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Solution

The fourth proportional to 66,355.47, 91,572.65 and 36,141.70 is: 49,876.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,355.47 : 91,572.65 = 36,141.70 : x
  2. Step 2: Convert to fraction form
    66,355.47/91,572.65 = 36,141.70/x
  3. Step 3: Cross multiply
    66,355.47x = 91,572.65 × 36,141.70
  4. Step 4: Simplify right side
    66,355.47x = 3,309,591,063.80
  5. Step 5: Solve for x
    x = 3,309,591,063.80/66,355.47
  6. Step 6: Final answer
    x = 49,876.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.